Patch making tools used in some DS hacks, trainers and other patches. "Rival" to xdelta it works in a similar manner.
This is the windows port (source included) of it originally from
http://sites.inka.de/tesla/f_others.html#bsdiff
This is the windows port (source included) of it originally from
http://sites.inka.de/tesla/f_others.html#bsdiff